Blackboard



June 9, 1925.` 1,541,717

E. H. KETCHUM BLACKBOARD I Filed Nov. 20, 1922 fj, 7 wwwa@ /115 @Mouw/1g Patented June 9, 1925.

EVERETT H. KETCHUM, OF fAMEsTowN, NEW YORK.

UNI'IED*'sfrarls''s- BLACKBOAR-D.

Application filed November 20, 1322. Serial No. 602,044.

' T0 all whom t may concer/n Lakin Avenue,.lamestown, in the county of Chautauqua and State of `New York, have invented certain new and useful linproveinents in Blackboards, of which the following, taken :in connection with the accompanying drawings, is a specification.`

This invention relates to an improvement in blackboards and more `particularly in a combination desk and blackboard which is made almost entirely of metal.

The chief object of this .invention is to provide a combination blackboard .and desk in which the leaf or desk board is of metal, in vwhich is a chart hold-er in combination with the `desk board, holders for stationery and similar articles for `usewhen the desk board is positioned to function as a desk and holders for pencils, chalk, crayons, etc., for use when the desk board is positioned to 'function as a blackboard.

`Other objects of` this invention reside in certain detailed improvements in the means for unitingvarious parts, Vin the formation of the desk board and in other features, as will fappear fromthe examination` of' the following description made in connection with the drawing whichform a part thereof and in which Fig. l is a front elevation of one enibodi ment of this invention.

Fig. 2 is a side elevation.

Fig. 3 is a longitudinal cross section showing parts in the position which 4theyassume when the desk board is in the desk position.

Fig. 4L is a view similar to Fig. 3 showing the parts in the position they assume when the desk board is in the blackboard position.

Fig. 5 is a plan view of the desk board.

Fig. 6 is an enlarged cross section of the desk board taken along the line (56 of Fig. 5.

Fig. T iS an enlarged view showing the manner in which the desk board is pivoted to the support.

Fig. 8 is an enlarged transverse cross section showing guide charts mounted in the pocket of the embodiment shown in the above figures, and

Fig. 9 is an enlarged detailed view showing the manner in which the supporting legs are attached to the upright.

A combination desk and blackboard of the general character shown in the drawing,

which comprises upright 2() on which a desk board 2l is pivoted, and a supporting brace 22 is old and the invention here set forth consists in certain improvements therein.

`The upright comprises the legs Q3, 24, connected hy a lower cross piece Q5 and an upper cross piece 26. `For further joinder of the legs 23, 24k there is provided at the top a metal plate 27 behind the cross piece 26 and projecting below the same and fixed at each side to the legs. The lower edge of the plate 27 is bent upwardly to forni a pocket 28 in which pencils, chalk, crayon,

etc., are held securely so that they `cannot fall out even when the board is collapsed.

The sides of the plate 27 being secured to the backs of the legs 3, 2li thus form with the cross piece 26 a pocket 29 in which are placed a plurality of cards 80. On

these cards are various figures and drawings which will guide the child using the blackboard. One of the cards 30 is preferably loft blank so that it can `be used as a support on which other pictures the child may desire to copy can' be mounted. The upper inner ends of the legs23, 24 are channelled to receive the edges of the cards 30 and pre vent their fallin-g out of the pocket 29 (see Fig. 8) Y Y The brace 9.2 comprises two side pieces 3l connected near the upright 20 4by a plato 32. The upper edge of the plate 3Q is flanged at 33 and the lower edge is flanged at 34. The flange 34 is of sufficient width so that it lies across the side pieces 31 and is secured to them. A partition 35 divides the pocket 36 formed by the flange 34 into coinpartments. In order to secure greater stability the side bars are also connected by a cross piece 37. The upper ends of the side bars 22 are beveled as at 38 so that when the parts are open, as shown in Figures 2, 3 and 4.-, the bevels 38 rest against the back of' the legs 23, 24E. y

The usual practice is assembling articles ot this character isto employ leaf hinges of the ordinary type and to provide chains or similar means 'for preventing the separan tion of the brace from the upright beyond the considered amount. In order to avoid the necessity of employing these chains the side pieces 31 are provided with the inclined 'faces 8S and are hinged to the legs 23 by means of fiat plates 39 which may be ot' any desired contour. The plates 89, as shown particularly in 9, are securely 'fastened to the bars 3l and securedl to the legs 23, 24 below the upper edges of the side pieces by pins 40 which act as pivots tor the brace 22.

The board 2l is a metal plate Ll-l provided on each side with flanges 42 which are turned over toward the center of the plate but which terminate short ot' it tor a purpose to be described below. In order to prevent warping or bending ot' the plate il cross depressions it?) are provided in the corners togi-vev additional stillness. The outer sides ot the llanges ft2 are at substantially right angles to the base (see Fig.` o) and when the tablet is mounted in the upright these sides let are parallel to the inner taces of the uprights. The tablet is pivota-lly mounted between the legs 25?, by means ot the pins 40 having slotted heads through the sides ot the legs and, are threaded at G tor secure engagement. inner ends el? oi the pins el() are preferably not' threaded and project through apertures t8 in the sides eil-lf. ends li ot the bolts is suli'ieieet to prevent any vtendencjiY ot'V the desk board to move'ont o't its place.

The flanged side ot theA board 2l is intended to be used as a desky and in order to The outer tace Lt9 ot the leat 2l is suitably' coated so that it mayY be used as a blackboard for chalk or crayons. Pins in the side faces of the legs 23, 24 determine the position ot the desk board 2l when it is used as a blackboard while cleats on the outer 'lace ot the legs may be turned when theA These pins are introduced 'the projection otl the' The blotter tion have-:been shownczuid. described', I amy not, to beA limited. .thereto sinceit vis obvious that others mayxbeinade,without departing trom the spiritfand scope. o the invention as set forth infthe following. claims.`

H avingthusA set 'forth-my invention, what l clain'ras ne wi' and for which I desire Vthe protection of Letters vPatent is.:

1. AY combination desk and blackboard comprising legs7 a desldrmird.` pivotally mounted upon said legs, a cross barconiieeting-said legs Aabove'said'--desk board, a plate secured vto thclm'ekt orf-said legs and said' bar the lower edge of. said plate eX- tendingbelow said cross bar and, a pocket. carried;` by said plate' bel'owsaid barj and above said desk boardaceessible in all positions ot saidboard.

2. lirav eoniibined'desk! and blackboard, a desk board pivotally mounted between up'- right legs, said desle board. beingot metal treated' on one receso-.that it can be used as a blackboard, eachA side ol said' desk'l 1 :.rd being flanged away l"from saidl treated "tace, they outer Afaces 'otsaid flanges beingat right angles to the. base` oft said 'desk board :1nd

their edges beiiig-benty downv toward' but not meeting-said base, so-tha-ttablotter can be inserted in the spaces betweenthe llange edges andthe base:

l'n testimony whereoli have atti-Hed' my signature in the presence-ot two witnesses. EVERETT Il; KETCH UM. litnessesz Ri'oHnoND S. HAYES, CORINNE V. SWANSON. 

